On 10.07.2018 22:26, Fujii Masao wrote:
On Tue, Jul 10, 2018 at 6:41 PM, Andrey V. Lepikhov
<a.lepik...@postgrespro.ru> wrote:

On 10.07.2018 06:45, Andres Freund wrote:


On 2018-07-10 06:41:32 +0500, Andrey V. Lepikhov wrote:

This functionality is needed in practice when we have to determine a
recovery time of specific backup.

What do you mean by "recovery time of specific backup"?

recovery time - is a time point where backup of PostgreSQL database instance
was made.
Performing database recovery, we want to know what point in time the
restored database will correspond to.
This functionality refers to improving the usability of pg_basebackup and
pg_probackup utilities.

Why don't you use a backup history file for that purpose?

Timestamp in a backup history file not correspond to any WAL record and can't be bind with a time of backup exactly. In my opinion, keeping timestamp in XLOG_BACKUP_END is more reliable, safe and easy way for recovering a database to a specific time.


Andrey Lepikhov
Postgres Professional:
The Russian Postgres Company

Reply via email to